A brief list of materials for torsion springs, what materials are good for torsion springs

65mn and 70 are commonly used in the market, although more expensive materials can be used. But whether the material is good or not depends on the working environment and cycle that the spring is suitable for, for example, 70 and 65mn can reach n working life in the same working environment, and other good materials such as can also be achieved, which does not affect your unit, so why not choose the cheap one and choose the expensive one is a bit redundant, so the working cycle is the premise of determining the material, whether you can achieve the torque you need depends on the spring rate, that is, the material wire diameter, spring diameter, number of turns, working stroke, Indispensable (what you call the absence of a condition). Of course, after the spring is formed, it must be heat treated to remove the stress, which is for the spring that produces deformation in the work.

If there is anything unclear, you can continue to ask, I hope what I said will help you, I am a spring.

There are many materials for making springs, including 40Mn, 70Mn, T8mNa, 55crva, 55crvsi, 60si2mna, 70si2mna, and so on. Springs of different materials are used in the environment and in the case of working intensity.

65mn is the most commonly used spring material, which is widely used and can be used as your torsion spring.

Commonly used materials for torsion springs: carbon spring steel wire; Valve oil quenching tempered carbon spring steel wire; oil quenched tempered silicon-manganese spring steel wire; silicon-manganese spring steel wire; chromium-silicon spring steel wire, etc.

Torsion spring is one of the most complex design principles of all spring categories, and the change of type is also quite lively, so the theory involved in the design is also the most cumbersome.

The circles are either tightly wound or separated and can withstand torsional loads (at right angles to the spring axis). The end of the spring can be wound into a hook or a straight twisting arm.

Torsion springs.

Spring constant: Expressed in k, the load (kgf mm) for every 1° additional torsion angle when the spring is torsional

Spring constant formula (unit: kgf mm):

e=Modulus of wire rigidity: piano wire e=21000, stainless steel wire e=19400, phosphor bronze wire e=11200, brass wire e=11200

d = wire diameter. do=od=outer diameter.

di=id=inner diameter.

dm = md = middle diameter = do-d

n = total number of laps.

r = force arm acting under load.

p=Jingjiang Mingyi Spring Factory free design of all kinds of springs.

The commonly used materials for stretch springs produced by Jiusheng are mainly carbon spring steel, which is relatively cheap, but the elastic limit is low; Low manganese spring steel, with good strength and hardenability, but easy to crack after quenching; Silicon manganese spring steel, the elastic limit has been improved, but also has good mechanical properties, chrome vanadium steel, toughness and strength are relatively good, but also slightly expensive.

Shanghai Chunming Spring Hardware **** Mainly engaged in spring steel wire, spring standard parts. Such questions can be directed to the company's Quality Assurance Department. 021-51085328 will give you a satisfactory answer.

Torsion springs are generally made of carbon spring steel wire or alloy spring steel wire, such as 72A, 82B, 65 manganese, T9A, 60 silicon 2 manganese and so on.

The simplest process is.

1 coil spring. 2. Heat treatment for stress relief.

3. Bend the twist arm.

4. Cut the tail. 5. Heat treatment is OK.

Carbon steel, stainless steel, nickel plating line, galvanized line, salt water line, etc. are all available.

Simple torsion spring process: the wire rod is formed by a spring machine, tempered, and surface treated according to the requirements (such as carbon steel plating, acid cleaning agent to clean the surface oil, etc.), and finally packaged.

It is usually machined with spring steel wire. It is produced directly by a spring machine and tempered at high temperature.

1 carbon spring steel wire.

gb4357-1989

It is suitable for making low-stress and high-stress springs.

Important usesCarbon spring steel wire.

65mn, 70, t9a, etc.

gb/t4358-1995

It is suitable for making high-stress valve springs.

Alloy spring steel wire.

50crva、55crsia、60si2mnagb/t5218-1999

It is suitable for making medium and high stress mechanical springs.

Piano wire YB T5101

It is suitable for making high-stress valve springs.

Stainless steel wire for springs.

tb（t）11

It is suitable for making corrosion-resistant, high-temperature and low-temperature resistant springs.

Valves are oil-quenched and tempered chromium-vanadium alloy spring steel wires.

50crva

yb/t5008-1993

It is suitable for making valve springs for internal combustion engines.

Valve oil quenching tempered carbon spring steel wire;

65mn、70

yb/t5102-1993

It is suitable for making valve springs for internal combustion engines.

Oil quenched tempered carbon spring steel wire.

yb/t5103-1993

It is suitable for making springs for mechanical parts.

Oil quenched tempered silicon-manganese alloy spring steel wire.

60si2mna

yb/t5104-1993

It is suitable for making automobile suspension springs.

Valves are oil-quenched and tempered chromium-silicon alloy spring steel wires.

55crsi

yb/t5105-1993

It is suitable for making high-stress-resistant, internal combustion engine valve springs.

Chromium vanadium spring steel wire for valves.

50crva

yb/t5136-1993

It is suitable for making valve springs.

Torsion spring: 280 tempering treatment after coiling the spring, such as reprocessing after coiling the spring, the low temperature tempering temperature is 250;

Torsion Spring

The circles are either tightly wound or separated to accommodate torsional loads (at right angles to the spring axis). The end of the spring can be wound into a hook or a straight twisting arm. The following is the necessary information for a torsion spring:

1) Free length.

2) Control diameter: (a) outer diameter, (b) inner diameter, (c) inner diameter of the casing, or (d) outer diameter of the crossed rod.

3) Wire size "wire diameter".

4) Material (type and grade).

5) Number of laps: (a) total number of laps and (b) right-handed or left-handed turn.

6) Torsional force: The number of pounds deflected to a certain angle.

7) Maximum deflection (the angle from the free position).

8) The form of the end.

Formula: f=(ed 4*) (3670*n*d) *le: spring modulus (generally take 20000); d:

wire diameter; Twist angle, n: effective number of turns, d:

Mid-diameter. L: Twist arm length.

The torsion of a spring mainly depends on the magnitude of its elastic coefficient, and the magnitude of the elastic coefficient mainly depends on: material, cross-sectional area, and the number of turns per unit length.

Torsion springs belong to coil springs. The ends of the torsion spring are fixed to other components, and as the other components rotate around the center of the spring, the spring pulls them back into their initial position, creating torque or rotational force. Torsion springs can store and release angular energy or statically hold a device in place by rotating the arm around the central axis of the spring.

The specific calculation is as follows:

Working deformation angle = (64x180x number of turns x middle diameter x working torque) (elastic modulus of spring material, 4th power of material diameter).

Estimate the length first, then calculate the volume, multiply by the density, and get the mass.

1. Estimate the length.

l = 4 turns)*pi*( 70 sqrt(3) 2 = Note: From the diagram, the opening angle is about 120 degrees, the distance between the two ends is 70mm, and the length of the straight line (two waists) estimated according to the isosceles triangle is 70 sqrt(3) 2, and the coiling part is estimated according to 4 turns.

2. Calculate the volume.

v = pi* *= mm3

3. Calculate the quality.

The density of stainless steel 431 is about, and this is related to the specific material, then the final weight estimate is:

g = * mm3 =